MCP23017 Can Convert 16-Bit Parallel Data Into Serial Data Of Iic Interface And Can Be Converted To Each Other. Integrated Power-On Reset (POR) Circuit To Reset To The Default State Of The Device. Two Opposing Programmable Interrupt Source Output. Polarity Flip Register Configurable GPIO Input Polarity. Iot Module, New Era Motherboard<br><br>1. Working Temperature Range: -40°C~85 °C 2. Working Voltage 1.8v~5.5v 3. Iic Communication Frequency: 1.7mhz Large 4. Working Current: 1ua 5. Icc Slave Device Address 6. Type: Iot Module Colour:black Material:plastic Size:2.75 x 2.2cm<br><br>Package Contents: 1 x Motherboard Template<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.